diff --git a/bip-0370.mediawiki b/bip-0370.mediawiki
index 89a435ba..533d6da8 100644
--- a/bip-0370.mediawiki
+++ b/bip-0370.mediawiki
@@ -167,7 +167,7 @@ The new per-input types for PSBT Version 2 are defined as follows:
 | None
 | No key data
 | <tt><32-bit uiht></tt>
-| 32 bit unsigned little endian integer less than 500000000 representing the minimum block height that this input requires to be set as the transaction's lock time.
+| 32 bit unsigned little endian integer greater than 0 and less than 500000000 representing the minimum block height that this input requires to be set as the transaction's lock time.
 |
 | 0
 | 2